Note that the MX switches are of a “normal” height, though there are some switches that are “low-profile” yet still have the familiar MX stem. The exact sound profile depends on a number of factors, from the keycaps, to the materials below the switch and the keyboard, though these switches will always be on the noisier side of the spectrum. There exist switches which are designed specifically with that goal in mind, but the average mechanical switch still produces more noise than, say, a laptop’s keyboard.